Wordnet 3.0
NOUN (2)
1. 
 an Oscan-speaking member of an ancient people of Campania; 
2. 
 an extinct Italic language of ancient southern Italy; 
The Collaborative International Dictionary of English v.0.48:
Oscan \Os"can\, a.
   Of or pertaining to the Osci, a primitive people of Campania,
   a province of ancient Italy. -- n. The language of the Osci.
   [1913 Webster]
WordNet (r) 3.0 (2006):
Oscan
    n 1: an Oscan-speaking member of an ancient people of Campania
    2: an extinct Italic language of ancient southern Italy